Patents by Inventor Neil Grainger

Neil Grainger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11292952
    Abstract: A method of performing an oilfield treatment that includes delivering to an oilfield fluid a host-guest complex, wherein the host-guest complex is formed from a solution of host molecule mixed with a guest molecule having opposing solubility from the host molecule; wherein the host molecule is present in the solution in an amount of at least 2×10?6 M.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: April 5, 2022
    Assignee: CAMERON INTERNATIONAL CORPORATION
    Inventors: Rachael Cole, Neil Feasey, Chandrashekhar Yeshwant Khandekar, Tore Nordvik, Neil Grainger
  • Patent number: 10550304
    Abstract: Quaternary ammonium compounds and compositions comprising the compounds are disclosed. The compositions are valuable as gas hydrate inhibitors in the oil and gas exploration, recovery and processing industries. The compounds and compositions may have improved biodegradability and reduced toxicity when compared with benchmark materials. Quaternary ammonium compounds of the present disclosure have the formula (I) in which R is C1-4 alkyl, C6-10 aryl, or C1-4alkyl-C6-10aryl; R1 is hydrogen or a group of formula —C(?O)X; and R2 is hydrogen or a group of formula —C(?O)Y, provided that R1 and R2 are not both hydrogen; X and Y are each independently a hydrogen, C1-6 alkyl or C1-6 alkenyl group, and Z is a C4-24 alkyl or C4-24 alkenyl group; each D is independently C1-4 alkylene; and A? is an anion.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 4, 2020
    Assignee: M-I Drilling Fluids UK Limited
    Inventors: Neil Grainger, Neil David Feasey
  • Publication number: 20190211249
    Abstract: A method of performing an oilfield treatment that includes delivering to an oilfield fluid a host-guest complex, wherein the host-guest complex is formed from a solution of host molecule mixed with a guest molecule having opposing solubility from the host molecule; wherein the host molecule is present in the solution in an amount of at least 2×10?6 M.
    Type: Application
    Filed: May 3, 2017
    Publication date: July 11, 2019
    Applicants: M-I L.L.C., M-I Drilling Fluids U.K. Limited, SCHLUMBERGER NORGE AS
    Inventors: Rachael Cole, Neil Feasey, Chandrashekhar Khandekar, Tore Nordvik, Neil Grainger
  • Patent number: 9695366
    Abstract: The invention relates to novel demulsifiers for use in the demulsification of oils from water and vice versa, including the demulsification of crude oil from sea water or brine. In particular, the present invention relates to novel demulsifiers which are environmentally friendly, or ‘green’, and which can be used without restriction on-site in offshore oil drilling fields, for example in the North Sea. The novel demulsifiers are based on the reaction product of alkoxylated polyols or polyol esters with dicarboxylic acids.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: July 4, 2017
    Assignee: Croda International PLC
    Inventors: Hanamanthsa Shankarsa Bevinakatti, Neil Grainger, Tracey Joanne Wardell
  • Publication number: 20160222278
    Abstract: A composition may include a branched polymer to encapsulate a guest molecule to be released under oilfield conditions. The guest molecule may include a production chemical, such as a scale or corrosion inhibitor. The branched polymer may be substituted with fatty acids. The branched polymer may also function as both an ecapsulator as well as a production chemical in certain applications.
    Type: Application
    Filed: November 4, 2015
    Publication date: August 4, 2016
    Inventors: Rachael Anne Cole, Neil David Feasey, Chandrashekhar Yeshwant Khandekar, Tore Nordvik, Neil Grainger
  • Publication number: 20160186033
    Abstract: Quaternary ammonium compounds and compositions comprising the compounds are disclosed. The compositions are valuable as gas hydrate inhibitors in the oil and gas exploration, recovery and processing industries. The compounds and compositions may have improved biodegradability and reduced toxicity when compared with benchmark materials. Quaternary ammonium compounds of the present disclosure have the formula (I) in which R is C1-4 alkyl, C6-10 aryl, or C1-4alkyl-C6-10aryl; R1 is hydrogen or a group of formula —C(=0)X; and R2 is hydrogen or a group of formula —C(=0)Y, provided that R1 and R2 are not both hydrogen; X and Y are each independently a hydrogen, C1-6 alkyl or C1-6 alkenyl group, and Z is a C4-24 alkyl or C4-24 alkenyl group; each D is independently C1-4 alkylene; and A? is an anion.
    Type: Application
    Filed: July 31, 2014
    Publication date: June 30, 2016
    Inventors: Neil GRAINGER, Neil David FEASEY
  • Patent number: 9103039
    Abstract: The present invention relates to a corrosion inhibitor for use in the oil and gas exploration, recovery and processing industries. In particular, the invention relates to a quaternary ammonium compound suitable for use as such a corrosion inhibitor, to the manufacture of the quaternary ammonium compound, to compositions containing it, and to methods of using it. Quaternary ammonium compounds of the invention have the formula (I) in which R is C1-6 alkyl, C2-6 alkenyl, aryl, aralkyl; X, Y, and Z are each independently hydrogen, or R1CO—, provided that at least one of X, Y and Z is R1CO, where R1 is C5-23 alkyl or alkenyl containing 0, 1, 2 or 3 double bonds; D is C2-6 alkylene; E is C2-4 alkylene; p, q and r are each, independently, integers from 0 to 20, with the proviso that p+q+r is from 3 to 20; and A? is an anion.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: August 11, 2015
    Assignees: M-I Drilling Fluids U.K. Limited, Stepan UK Limited
    Inventors: Alyn Jenkins, Neil Grainger, Michael Blezard, Mathieu Pepin
  • Publication number: 20140228456
    Abstract: The invention relates to novel demulsifiers for use in the demulsification of oils from water and vice versa, including the demulsification of crude oil from sea water or brine. In particular, the present invention relates to novel demulsifiers which are environmentally friendly, or ‘green’, and which can be used without restriction on-site in offshore oil drilling fields, for example in the North Sea. The novel demulsifiers are based on the reaction product of alkoxylated polyols or polyol esters with dicarboxylic acids.
    Type: Application
    Filed: September 21, 2012
    Publication date: August 14, 2014
    Applicant: CRODA INTERNATIONAL PLC
    Inventors: Hanamanthsa Shankarsa Bevinakatti, Neil Grainger, Tracey Joanne Wardell
  • Publication number: 20120128530
    Abstract: The present invention relates to a corrosion inhibitor for use in the oil and gas exploration, recovery and processing industries. In particular, the invention relates to a quaternary ammonium compound suitable for use as such a corrosion inhibitor, to the manufacture of the quaternary ammonium compound, to compositions containing it, and to methods of using it. Quaternary ammonium compounds of the invention have the formula (I) in which R is C1-6 alkyl, C2-6 alkenyl, aryl, aralkyl; X, Y, and Z are each independently hydrogen, or R1CO—, provided that at least one of X, Y and Z is R1CO, where R1 is C5-23 alkyl or alkenyl containing 0, 1, 2 or 3 double bonds; D is C2-6 alkylene; E is C2-4 alkylene; p, q and r are each, independently, integers from 0 to 20, with the proviso that p+q+r is from 3 to 20; and A? is an anion.
    Type: Application
    Filed: May 7, 2010
    Publication date: May 24, 2012
    Applicants: STEPAN UK LIMITED, M-I DRILLING FLUIDS UK LIMITED
    Inventors: Alyn Jenkins, Neil Grainger, Michael Blezard, Mathieu Pepin
  • Publication number: 20080139346
    Abstract: The invention relates to a racquet that is provided for use in games in which it is used for striking a ball that has a tail, the tail being in the form of a plurality of elongate streamer elements that are anchored to the ball. Such a ball generally has a mass less than 30 g and thus requires the racquet to have a mass less than 200 g. In order to avoid tangling of the tail of the ball with the racquet after the ball has been struck with the racquet, the frame of the racquet is provided with anti-tangle formations that effectively space the exposed part of the strings of the racquet from the outer peripheral edge of the head part of the frame by between 20 and 30 mm.
    Type: Application
    Filed: August 2, 2007
    Publication date: June 12, 2008
    Inventor: BRYAN NEIL GRAINGER
  • Patent number: 7285519
    Abstract: Petroleum additive formulations include a petroleum additive dissolved in a carrier fluid including at least one compound of the formula (I): (R2)p-Ph-(CH2)m—COO—(AO)n—R1 where; R1 is C1 to C10 alkyl; AO is alkyleneoxy; n is 0 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenyl group, which may be substituted with groups (R2)p; where each R2 is independently C1 to C4 alkyl or alkoxy; and p is 0, 1 or 2. Further, crude petroleum or petroleum refinery streams can be treated by adding a petroleum additive dissolved in a carrier fluid of the formula (I) to the product stream. Desirably the carrier fluid is or includes iso-propyl benzoate and/or 2-ethyl hexyl benzoate.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: October 23, 2007
    Assignee: Croda International Plc
    Inventors: Terence Cox, Neil Grainger, Edward George Scovell
  • Patent number: 7122507
    Abstract: Drilling, completing or workover of a well, particularly an oil and/or gas well, is carried out using a fluid which includes a continuous phase including an ester of the formula (I): (R2)p-Ph-(CH2)m—COO-(AO)n-R1 where R1, AO, n, m, Ph, R2 and p have defined meanings and particularly where the esters are alkyl or alkenyl benzoate esters. These esters are beneficial by having a range of viscosities, especially extending to low viscosities, and attractive toxicological and environmental profiles for use in drilling, completion and/or workover of wells.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: October 17, 2006
    Assignee: Imperial Chemical Industries PLC
    Inventors: Neil Grainger, Terence Cox, Edward George Scovell
  • Patent number: 7055628
    Abstract: A well drilling method comprises removing the drilling cuttings using an aqueous drilling fluid such as a foam including a foaming agent which includes at least one mono-(aliphatic hydrocarbyl) phosphate ester. More specifically, the drilling fluid takes the form of a potassium and/or alkanolamine and/or alkylalkanolamine salt, the foam also comprising a foam stabiliser.
    Type: Grant
    Filed: October 14, 2002
    Date of Patent: June 6, 2006
    Assignees: Institut Francais du Petrole, Imperial Chemical Industries Plc
    Inventors: Neil Grainger, Benjamin Herzhaft, Mark White, Annie Audibert Hayet
  • Publication number: 20050082090
    Abstract: The invention relates to a well drilling method consisting in removing the drilling cuttings using an aqueous drilling fluid such as a foam including a foaming agent which is, or includes, at least one mono-(aliphatic hydrocarbyl) phosphate ester. More specifically, the drilling fluid takes the form of a potassium and/or alkanolamine and/or alkylalkanolamine salt, said foam also comprising a foam stabiliser.
    Type: Application
    Filed: October 14, 2002
    Publication date: April 21, 2005
    Inventors: Neil Grainger, Benjamin Herzhaft, Mark White, Annie Audibert Hayet
  • Patent number: 6849582
    Abstract: Stimulation, particularly fracturing or acidising, of hydrocarbon wells having bores leading to hydrocarbon bearing uses a fluid including a continuous phase of or including a compound of the formula (1): (R2)p—Ph—(CH2)m—COO—(AO)n—R1 where R1, AO, n, m, Ph, R2 and p having defined meanings and particularly where the esters are alkyl or alkenyl benzoate esters. These esters are beneficial by having a range of viscosities, especially extending to low viscosities, and attractive toxicological and environmental profiles for use in well stimulation.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: February 1, 2005
    Assignee: Imperial Chemical Industries PLC
    Inventors: Neil Grainger, Terence Cox, Edward George Scovell
  • Publication number: 20030130132
    Abstract: Drilling, completing or workover of a well, particularly an oil and/or gas well, is carried out using a fluid which includes a continuous phase including an ester of the formula (I): (R2)p-Ph-(CH2)m—COO-(AO)n—R1 where R1, AO, n, m, Ph, R2 and p have defined meanings and particularly where the esters are alkyl or alkenyl benzoate esters. These esters are beneficial by having a range of viscosities, especially extending to low viscosities, and attractive toxicological and environmental profiles for use in drilling, completion and/or workover of wells.
    Type: Application
    Filed: November 14, 2002
    Publication date: July 10, 2003
    Applicant: Imperial Chemical Industries PLC
    Inventors: Neil Grainger, Terence Cox, Edward George Scovell
  • Publication number: 20030079879
    Abstract: The deposition of asphaltenes and/or petroleum waxes can be inhibited and/or asphaltenes and/or petroleum waxes can be removed from a well, pipe or vessel by contacting the asphaltene and/or petroleum wax or the well pipe or vessel adjacent a location where deposition of asphaltene and/or petroleum wax is expected, with a solvent including at least one compound of the formula (I): R1—(AO)n—OOC—(CH2)m—Ph—(R2)p where R1 is a C1 to C20 hydrocarbyl group; AO is an alkyleneoxy group and may vary along the (poly)alkyleneoxy chain; n is 1 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenyl group, which may be substituted with groups (R2)p where each R2 is independently a C1 to C4 alkyl or alkoxy group; and p is 0, 1 or 2, and subsequently removing the solvent with softened, dissolved or dipersed asphaltenes and/or petroleum waxes from the well, pipe or vessel.
    Type: Application
    Filed: September 30, 2002
    Publication date: May 1, 2003
    Applicant: Imperial Chemical Industries PLC
    Inventors: Neil Grainger, Edward George Scovell, Terence Cox
  • Publication number: 20030060375
    Abstract: Stimulation, particularly fracturing or acidising, of hydrocarbon wells having bores leading to hydrocarbon bearing uses a fluid including a continuous phase of or including a compound of the formula (I): (R2)p—Ph—(CH2)m—COO—(AO)n—R1 where R1, AO, n, m, Ph, R2 and p have defined meanings and particularly where the esters are alkyl or alkenyl benzoate esters. These esters are beneficial by having a range of viscosities, especially extending to low viscosities. and attractive toxicological and environmental profiles for use in well stimulation.
    Type: Application
    Filed: November 14, 2002
    Publication date: March 27, 2003
    Applicant: Imperial Chemical Industries PLC
    Inventors: Neil Grainger, Terence Cox, Edward George Scovell
  • Publication number: 20030051395
    Abstract: Petroleum additive formulations include a petroleum additive dissolved in a carrier fluid including at least one compound of the formula (I): (R2)p—Ph—(CH2)m—COO—(AO)n—R1 where; R1 is C1 to C10 alkyl; AO is alkyleneoxy; n is 0 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenyl group, which may be substituted with groups (R2)p; where each R2 is independently C1 to C4 alkyl or alkoxy; and p is 0, 1 or 2. Further, crude petroleum or petroleum refinery streams can be treated by adding a petroleum additive dissolved in a carrier fluid of the formula (I) to the product stream. Desirably the carrier fluid is or includes iso-propyl benzoate and/or 2-ethyl hexyl benzoate.
    Type: Application
    Filed: May 24, 2002
    Publication date: March 20, 2003
    Applicant: Imperial Chemical Industries Plc
    Inventors: Terence Cox, Neil Grainger, Edward George Scovell